Calvin p



'Nov; 15, 1932. A RAE ET A 1,887,730

IGNITION MECHANISM FOR OIL BURNERS Filed June 18, 1929 INVENTOR. %w, z h 5 Patented Nov. 15, 1932 UNITED STATES PATENT OFFICE TAKES N. MAGBAE AND CALVIN P. PACKARD, Olj STAMI'ORD, CONNECTIO'U '1, ASSIGNOBS T PETROLEUM HEAT AND POWER COMPANY, 01' NEW YORK, N Y. A CORPORATION 01' DELAWARE Application fled June 18, was. Serial in. 371,784.

This invention relates to an improvement in ignition mechanism for oil burners and is r be of the stationary type or of the typ particularly directed to the i 'ter or heater y which the fuel is ignited, w ether the same e which is moved into and out of firing position.

As will appear hereinafter, the igniter or heater has been illustrated. as in the form of wire coiled about a suitable core although the present invention is adapted for application to other forms of element, and one of the objects of the invention is the provision of a shield or barrier intermediate the heater or igniter and the flame of the burner whereby when the i iter is in operative position injury to the igniter or heater from the flame of the burner is reduced to a minimum.

In the drawing accompanying this application:

Fig. 1 is a. part sectional plan view of an oil burner installation in which ignition mechanism embodying the invention is shown on an enlar ed scale with respect to the showin% of the urner;

ig. 2 is a sectionon the line 22 of Fig. 1; Fig. 3 is an elevational view of the igniter mechanism; and

Fig. 4 is a developed view of the shield or barrier interposed between the igniter or heating element and the flame of the burner.

Referring to the drawing in detail, the embodiment of the invention as illustrated in -5. The primary object of this invention is the provision of means intermediate the ele-.

ment 5 and the flame adjacent the nozzle of the burner 1 for preventing injury to the element 5 from the flame. In this connection it will be observed from an inspection of the drawing that the core 4 has secured thereto a metal shield shown at 6. The end of this shield as shown at 7 is circular and the shield may be secured to the core by a bolt 8 which passes through ahole 9 provided in thecircular part 7 of the shield. The shield is bent around the heater, as will be seen from Fig. 2, so as to surround practically half of the same, the portion of the i niter or heater surrounded by the shield Twing that portion which when the igniter is in operative osition is directly exposed to the action 0 the flame of the burner. The shield is cut back slightly as shown at10 so as to expose an increased area of the heater 5 adjacent the rear and top surface thereof.

In 0 eration the oil issuing from the nozzle of the urner 1 in finely divided oratomized condition strikes the shield and sprays or splashes from thence upon the wireheater 5, some of the oil probably striking the wire direct at the cutback 10. The oil striking the wire 5 which it will be understood is heated to incandescence becomes ignited.

By reason of the barrier provided by the shie d 6 the flame of the burner does not con tact directly with the heater element so that injury to the heater is substantially entirely eliminated.

In the type of ignition mechanism illustrated the heater is retracted after ignition, but even so it is necessarily ex osed to'the heat of the flame'for a time an it has been found that with the shield 6 in place the life of the heater 5 is materially lengthened.

This invention is not to be limited to the precise form of shield emplo ed nor-tothe precise type of igniter or. eater element above described inasmuch as changes may be made therein within the purview of this invention.

It is to be understood also that the expressions igniter and heater element employed herein are intended to cover wire elements, such as illustrated, the bar t e sometimes employed wherein a bar 0' material is heated to incandescence, or other type of igniter element or heater element which if left exposed to the flame of the burner is detrimentally affected.

What is claimed is Ignition mechanism for oil burners comprisin a core of insulating material, a heater carrie thereby and com rising wire coiled I about the same, an im er orate shield carried by said core, said shie (1 extending across the end of the core and alon the side of the heater adjacent the burner 1n the path of fuel issuing from the burner.

10 This specification signed this 13th day of June, 1929.

JAMES N. MACRAE. This specification signed this 13th day of June, 1929.

15 CALVIN P. PACKARD. 

